<template>
  <view>
   <!-- 购物车页面 --> 
    <view class="cart-container" v-if="cart.length !== 0">
      <!-- 收货地址组件 -->
      <my-address></my-address>
      
      <view class="cart-title-box">
        <uni-icons type="shop" size="18"></uni-icons>
        <text class="cart-titie-text">购物车</text>
      </view>
      
      <!-- 循环渲染购物车中的数据 -->
      <uni-swipe-action>
        <block v-for="(goods, i) in cart" :key="i">
        <uni-swipe-action-item :options="options" @click="">
          <my-goods :goods="goods" :showRadio="true" :showNum="true" @radio-change="radioChangeHandler" @num-change="numChangeHandler"></my-goods>
        </uni-swipe-action-item>
        </block>
      </uni-swipe-action>
        <!-- 结算组件 -->
        <my-settle></my-settle>
    </view>
    
    <!-- 空购物车页面 -->
    <view class="empty-cart" v-else>
      <image src="/static/cart_empty@2x.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
  </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  import { mapState, mapMutations } from 'vuex'
  export default {
    mixins: [badgeMix],
    computed: {
      ...mapState('m_cart', ['cart'])
    },
    data() {
      return {
        options: [{
             text: '删除', // 显示的文本内容
             style: {
               backgroundColor: '#C00000' // 按钮的背景颜色
             }
           }]
      };
    },
    methods:{
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount']),
       // 商品的勾选状态发生了变化
      radioChangeHandler(e) {
        this.updateGoodsState(e)
      },
      // 商品的数量发生了变化
      numChangeHandler(e) {
        console.log(e);
        this.updateGoodsCount(e)
      }
    }
  }
</script>

<style lang="scss">
.cart-container {
  padding-bottom: 50px;
}
.cart-title-box {
  height: 40px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid #efefef;
  padding-left: 5px;
  .cart-titie-text {
    margin-left: 10px;
  }
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  .empty-img {
    width: 90px;
    height: 90px;
  }
  .tip-text {
    font-size: 12px;
    color: gray;
    padding-top: 15px;
  }
}
</style>
